Gaseous fuel



UNITED STATES PATENT OFFICE.

JAMES R. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, OF LAKEWOOD, OHIO, ASSIGNORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A. CORPORATION OF DELAWARE GASEOUS FUEL.

No Drawing.

To all whom it may concern:

Be it known that we, (1) JAMES H. Ross, (2) JoHN HARRIS, citizens of the United States. residing at (1) Edgeworth, (2) Lakewood, in the county of 1) Allegheny, (2) Cuyahoga, and State of (1) Pennsylvania, (2) Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, of which the following is a full, clear, and exact description.

This invention relates to gaseous fuel, and particularly to fuels for the cutting and welding of metal wherein a combustible base of hydrogen is employed together with another gas or gases capable of producing within the blow pipe flame, a luminous cone whereby the application of the flame to the work is facilitated.

It has been proposed to mix with hydrogen gases such as illuminating gas and carbon monoxide, the mixture being particularly well suited for certain kinds of work. It is the purpose of this invention to produce a gas employing hydrogen as a combustible base which shall be particularly useful for the cutting of alloys, cast steel, corroded, dirty and slaggy iron and steel, as well as cast iron; also for heating large masses or bodies of metal for the purpose of softening the same. For this purpose we employ a mixture of propane with hydrogen in proportions of from to 25% by volume of such propane to the hydrogen constituent, By the use of the propane. a high carbon content in the mixture is obtained. thereby producing a flame. the volume and heat units of which will be in- Specification of Letters Patent.

Patented J an. 24, 1922,

Application filed December 26, 1919. Serial No. 347,457.

creased over the volume and heat units produced by hydrogen alone to the extent to which the propane is present in the mixture. The presence of the propane in the mixture enables the metal to be pre-heated quickly-with sufficient rapidity to more than offset the loss of heat through conduction and radiation. This renders the fuel particularly useful for the cutting of heavy masses of metal as well as for the cutting and heating of metals of the character set forth hereinbefore.

According to Richards on Metallurgical Calculations, published in 1908, the flame temperature produced'by the combustion of the aforesaid mixture will be over 3200 (7., and the variations in the percentages of the said gases will cause the following variations in the net 13. T. U. per cubic foot of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No, 1 mixture, 95% hydrogen with 5% propane: net B. T. U.s 403; cu. ft. of oxygen .725.

No. 2 mixture, 75% hydrogen with 25% propane: net B. T. l .s 839; cu. ft. of oxygen 1.625.

Having thus described our invention, what we claim is A gas for the purpose specified consisting of a mixture of hydrogen with from 5% to 25% by volume of propane.

In testimony whereof, we hereunto affix our signatures,

JAMES R. ROSE. JOHN HARRIS. 

